Room vaporizer



FIG. 1 is a front elevational view of a room vaporizer showing my new design;

FIG. 2 is a perspective view taken from the top, front and right side thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a bottom view thereof. 

The ornamental design for a room vaporizer, as shown. 